Flexible keyboard accessory for a portable electronic device

ABSTRACT

An accessory device for use with an electronic device is disclosed. The accessory device may include a cover configured to overlay an electronic device (or device) or fold to form a support structure for the electronic device. The cover may include an attachment feature that electrically couples with the device, and a keyboard foldable with respect to the cover. Further, the keyboard may include a retention feature designed to receive the attachment feature in a folded configuration of the cover. The accessory device may further include an electrically conductive fabric that folds with the cover. The accessory device may include an array of magnets throughout the attachment feature, the cover, and the keyboard. The magnets may be used to magnetically couple together 1) segments of the cover, 2) the cover and the keyboard assembly, 3) and/or the device with the cover.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application is a continuation of U.S. application Ser. No.15/275,268, filed Sep. 23, 2016, entitled “FLEXIBLE KEYBOARD ACCESSORYFOR A PORTABLE ELECTRONIC DEVICE”, which is a continuation of U.S.application Ser. No. 15/256,433, filed Sep. 2, 2016, entitled “FLEXIBLEKEYBOARD ACCESSORY FOR A PORTABLE ELECTRONIC DEVICE”, now U.S. Pat. No.9,946,295, which claims the benefit of priority under 35 U.S.C. § 119(e)to U.S. Provisional Application Ser. No. 62/214,671, filed on Sep. 4,2015, entitled “FEATURES OF A FLEXIBLE KEYBOARD ACCESSORY FOR A PORTABLEELECTRONIC DEVICE” the contents of which are incorporated herein byreference in their entirety for all purposes.

FIELD

The following description relates to an accessory device used inconjunction with an electronic device. In particular, the followingdescription relates to an accessory device used to support and protectthe electronic device in various foldable configurations. Further, theaccessory device may include a keyboard assembly used to generate aninput or command to the electronic device. When coupled with theelectronic device, the accessory device also may be in electricalcommunication with the electronic device.

BACKGROUND

An accessory device is used with an electronic device. Further, anaccessory device provides a protective cover for the electronic device,by coupling with and folding over the electronic device. Also, someaccessory devices include layers of different materials designed toprovide an aesthetic appearance.

SUMMARY

In one aspect, an accessory device suitable for use with an electronicdevice is described. The accessory device may include a foldable coverthat includes an attachment feature configured to couple with theelectronic device. The accessory device may further include a keyboardassembly hingedly coupled with the foldable cover allowing the keyboardassembly to rotate with respect to the foldable cover. The keyboardassembly may include a retention feature configured to receive theattachment feature. The accessory device may further include anelectrically conductive fabric extending from the attachment feature tothe keyboard assembly. In some instances, the electrically conductivefabric provides an electrical communication path between the electronicdevice and the keyboard assembly.

In another aspect, an accessory device suitable for use with anelectronic device. The electronic device may include a display assembly,a first device magnet having a first magnetic polarity, a second devicemagnet having a second magnetic polarity opposite the first magneticpolarity, and an electrical contact. The accessory device may include acover having a size and shape to overlay the display assembly. Theaccessory device may further include a keyboard rotatably coupled withthe cover. The accessory device may further include an attachmentfeature secured with the cover. The attachment feature may include afirst magnet having the second magnetic polarity to magnetically couplewith the first device magnet. The attachment feature may further includea second magnet having the first magnetic polarity to magneticallycouple with the second device magnet. The attachment feature may furtherinclude a contact that electrically couples with the electrical contactto place the electronic device in electrical communication with thekeyboard.

In another aspect, an accessory device suitable for use with anelectronic device. The accessory device may include a cover thatreleasably couples with the electronic device. The accessory device mayfurther include a keyboard assembly secured with the cover by a hinge.The accessory device may further include a support layer embedded in thehinge. In some embodiments, the keyboard assembly is foldable withrespect to the cover in a first direction. Also, in some embodiments,the support layer limits movement of the keyboard assembly in a seconddirection opposite the first direction.

Other systems, methods, features and advantages of the embodiments willbe, or will become, apparent to one of ordinary skill in the art uponexamination of the following figures and detailed description. It isintended that all such additional systems, methods, features andadvantages be included within this description and this summary, bewithin the scope of the embodiments, and be protected by the followingclaims.

BRIEF DESCRIPTION OF THE DRAWINGS

The disclosure will be readily understood by the following detaileddescription in conjunction with the accompanying drawings, wherein likereference numerals designate like structural elements, and in which:

FIG. 1 illustrates an isometric view of an embodiment of an accessorydevice, in accordance with the described embodiments;

FIG. 2 illustrates an exploded view of the attachment feature, showingseveral features that form the attachment feature;

FIG. 3 illustrates a cross sectional view of the attachment feature,showing the various components of the attachment feature assembledtogether;

FIG. 4 illustrates a plan view showing the cover, showing the secondcover layer extending to wrap around and overlay the attachment feature(as shown in FIG. 3);

FIG. 5 illustrates a plan view of the accessory device, showing severalmagnets and detection mechanisms positioned throughout the accessorydevice;

FIG. 6 illustrates an isometric view of an embodiment of an electronicdevice suitable for use with the accessory device shown in FIG. 1;

FIG. 7 illustrates a side view of the accessory device coupled with theelectronic device, with the accessory device in a folded configurationto allow use of the keyboard assembly with the electronic device;

FIG. 8 illustrates an enlarged view of Section A, shown in FIG. 7,showing the attachment feature positioned in the retention feature;

FIG. 9 illustrates a side view of the accessory device coupled with theelectronic device, with the accessory device in an alternate foldedconfiguration to further position the electronic device in an uprightposition;

FIG. 10 illustrates a side view of the accessory device coupled with theelectronic device, with the accessory device in an alternate foldedconfiguration to position the keyboard assembly behind the electronicdevice;

FIG. 11 illustrates a side view of the accessory device coupled with theelectronic device, with the accessory device in an alternate foldedconfiguration behind the electronic device such that the accessorydevice supports the electronic device in a horizontal position;

FIG. 12 illustrates an isometric view of the accessory device in aclosed configuration, showing the accessory device positioned over thedisplay assembly of the electronic device;

FIG. 13 illustrates a plan view of the accessory device, showing asupport layer extending along the first segment and partially onto thekeyboard assembly;

FIG. 14 illustrates a side view of the accessory device, with thekeyboard assembly folded over and onto the cover;

FIG. 15 illustrates a side view of the accessory device, with thekeyboard assembly folded away from the cover;

FIG. 16 illustrates a cross sectional view of the accessory device,showing the support layer combining with other features to limit themovement of the keyboard assembly with respect to the cover;

FIG. 17 illustrates a cross sectional view of an alternate embodiment ofan accessory device, showing a support layer combining with a rigidlayer to limit the movement of a keyboard assembly with respect to acover;

FIG. 18 illustrates an interior view of an embodiment of a top portionof a keyboard assembly, showing a vent system distributed throughout thekeyboard assembly that allows passage of air into and out of thekeyboard assembly;

FIG. 19 illustrates a partial exterior view of the top portion of thekeyboard assembly shown in FIG. 18, further showing the first opening;and

FIG. 20 illustrates a partial plan view of an alternative embodiment ofan accessory device having a display assembly in place of a keyboardassembly.

Those skilled in the art will appreciate and understand that, accordingto common practice, various features of the drawings discussed below arenot necessarily drawn to scale, and that dimensions of various featuresand elements of the drawings may be expanded or reduced to more clearlyillustrate the embodiments of the present invention described herein.

DETAILED DESCRIPTION

Reference will now be made in detail to representative embodimentsillustrated in the accompanying drawings. It should be understood thatthe following descriptions are not intended to limit the embodiments toone preferred embodiment. To the contrary, it is intended to coveralternatives, modifications, and equivalents as can be included withinthe spirit and scope of the described embodiments as defined by theappended claims.

In the following detailed description, references are made to theaccompanying drawings, which form a part of the description and in whichare shown, by way of illustration, specific embodiments in accordancewith the described embodiments. Although these embodiments are describedin sufficient detail to enable one skilled in the art to practice thedescribed embodiments, it is understood that these examples are notlimiting such that other embodiments may be used, and changes may bemade without departing from the spirit and scope of the describedembodiments.

The following disclosure relates to an accessory device suitable for usewith an electronic device. The accessory device may include a cover anda keyboard assembly secured with the cover. The accessory device mayfurther include an attachment feature secured with the cover, and usedto secure the electronic device with the accessory device by way of amagnet (or magnets) disposed in the attachment feature. Further, whenthe electronic device is secured with the accessory device, theattachment feature includes a contact that electrically couples with theelectronic device. Also, the accessory device may include anelectrically conductive fabric embedded between two or more layers ofmaterial, extending from the contact to the keyboard assembly. In thismanner, the electronic device can be in electrical communication withthe keyboard assembly by way of an electrically conductive fabric andthe contact. Also, the cover can take the form of a foldable cover tosupport the electronic device in various folded configurations, and canalso be unfolded to cover a display of the electronic device. Theelectrically conductive fabric may fold and unfold in accordance withthe foldable cover.

The accessory device may include several magnets distributed internallythroughout not only the attachment feature, but also the cover and thekeyboard assembly. For example, the cover may include multiple segmentsthat are foldable with respect to each other by way of fold regionsbetween the segments, with the cover defining a support structure basedupon a folded configuration of the segments. In order to maintain thefolded configuration, several segments may include cover magnetsembedded in the segments, allowing allow at least some segments tomagnetically couple with one another and form several magnetic circuitsto maintain engagement between the segments. The accessory device mayinclude additional magnets to provide the accessory device withadditional capabilities. For example, additional cover magnets embeddedin the segments are positioned and designed to magnetically couple withkeyboard magnets embedded in the keyboard assembly. In this regard, thekeyboard assembly can magnetically couple with the cover when thekeyboard assembly is folded onto the cover. Some of the cover magnetsand the keyboard magnets may also be used to magnetically couple andsecure the electronic device with the cover and the keyboard assembly,respectively.

Also, both the cover and the keyboard assembly may include a detectionmechanism, such as a Hall effect sensor, designed to detect an externalmagnetic field generated by one or more magnets. The detection of theexternal magnetic field can correspond to a position of the cover withrespect to the electronic device, or the cover with respect to thekeyboard assembly. Further, the detection mechanism can determine that,for example, the keyboard assembly is not magnetically coupled with thecover. In this regard, in one embodiment, when the keyboard assembly ispulled away from the cover and positioned for use with the electronicdevice, the detection mechanism, in response to no longer detecting theexternal magnetic field, generates an electrical input (or input signal)to a processor of the electronic device (or in some cases, the accessorydevice), causing the keyboard assembly to power on. Accordingly, inorder to operate, the keyboard assembly may use electrical current,which may be provided by the electronic device by way of theelectrically conductive fabric.

In addition to providing a magnetic and electrical coupling with theelectronic device, the attachment feature may be used to support theelectronic device in a folded configuration. For example, the attachmentfeature magnets may magnetically couple with magnets in the keyboardassembly (in addition to magnets in the electronic device). Further, ina particular folded configuration, the attachment feature may bepositioned in a retention feature of the keyboard assembly that providesa mechanical stop to limit and/or prevent movement of the attachmentfeature and, accordingly, the electronic device (coupled with theattachment feature). The keyboard assembly may also include additionalkeyboard magnets embedded in the keyboard and disposed below theretention feature. These keyboard magnets can magnetically couple withthe attachment feature magnets. In this manner, the magnets positionedbelow the retention feature provide a magnetic attraction force andcombine with the retention feature to maintain a fixed position of theattachment feature and, accordingly, the electronic device coupled withthe attachment feature.

Also, while the keyboard assembly may be foldable with the respect tothe cover, the accessory device may include features that limit movementof the keyboard assembly. For example, the accessory device may includea support layer that includes an embedded material extending along thecover and the keyboard assembly. The material may include a liquidcrystal polymer fiber material designed to allow some movement, andrestrict other movement. For example, when the keyboard assembly is notin use, the keyboard assembly may be folded over and onto the cover.However, to use the keyboard assembly, a user may fold the keyboardassembly away from the cover. The support layer may limit the movementof the keyboard assembly with respect to cover by limiting rotationalmovement of the keyboard assembly to 180 degrees, or approximately 180degrees, with respect to the cover. In this manner, the keyboardassembly may present itself in a flat or horizontal manner, co-planarwith the cover, and in a manner consistent with a keyboard assemblyresting on a flat surface, such as a table, even though the keyboardassembly is unsupported by the flat surface. Further, the cover may befolded to support the electronic device at an angle with respect to thekeyboard assembly to present the electronic device and the keyboardassembly in a configuration similar to a traditional portable computingdevice (such as a laptop). However, the accessory device may providegreater portability relative to the portable computing device bydetaching from the electronic device, thereby allowing the accessorydevice to couple with another electronic device.

Also, the accessory device may be designed such that the electronicdevice can be constructed for use with additional accessory devices. Forexample, a case or shell, used to receive an enclosure of the electronicdevice, may include an opening that accommodates the accessory device,and in particular, the attachment feature of the accessory device. Thisallows for greater protection to the electronic device, and furtherallows a user to change accessories according to a desired preference.

These and other embodiments are discussed below with reference to FIGS.1-20. However, those skilled in the art will readily appreciate that thedetailed description given herein with respect to these Figures is forexplanatory purposes only and should not be construed as limiting.

FIG. 1 illustrates an isometric view of an embodiment of an accessorydevice 100, in accordance with the described embodiments. The accessorydevice 100 may be suitable for use with an electronic device (notshown), such as a tablet computing device or a smartphone, when theelectronic device is coupled with the accessory device 100. As shown,the accessory device 100 may include a cover 102 coupled with a keyboardassembly 104. The cover 102 may include a size and a shape to overlay,or cover, a display assembly (not shown) of an electronic device. Insome embodiments, the cover 102 includes multiple segments. For example,as shown in FIG. 1, the cover 102 includes a first segment 106, a secondsegment 108, and a third segment 110. Each segment can include a panel(not shown) formed from a rigid material, such as glass fiber, toprovide structural support. In order to form the segmented design, thefirst segment 106, the second segment 108, and the third segment 110 mayundergo a de-boss operation to a desired shape. Also, each of the firstsegment 106, the second segment 108, and the third segment 110 may bemoveable or rotatable with respect to the remaining segments by way offold regions between adjacent segments. In this regard, the cover 102may be referred to, and used as, as a foldable cover. The cover 102 maybe folded into several distinct folded configurations, which will beshown and described below. Further, as shown in FIG. 1, the thirdsegment 110 may be raised or elevated with respect to the first segment106 and the second segment 108. The raised feature of the third segment110 allows the keyboard assembly 104 to fold over and onto the firstsegment 106 and the second segment 108 such that the keyboard assembly104, and in particular a rear portion (not shown) of the keyboardassembly 104, is co-planar, or flush, with respect to the third segment110. This will be shown below.

Also, the cover 102 may include a first cover layer 112 and a secondcover layer 118 that combines with the first cover layer 112 to covereach of the aforementioned segments and their respective panels. Thefirst cover layer 112 and the second cover layer 118 may allow thekeyboard assembly 104 to fold with respect to the cover 102, or viceversa. In this regard, the first cover layer 112 and the second coverlayer 118 may combine to define a hinge 105 between the cover 102 andthe keyboard assembly 104. However, in order to limit some movement ofthe keyboard assembly 104, the hinge 105 may further include a supportlayer (shown below) embedded between the first cover layer 112 and thesecond cover layer 118. The first cover layer 112 may include a fabriclayer. The fabric may include microfiber, or generally, any materialthat provides a cosmetic enhancement while also not causing damage to adisplay assembly (not shown) of an electronic device. In someembodiments, the second cover layer 118 includes a polymer-based, lowmodulus elastomeric material that allows some flexibility of theattachment feature 114 with respect to the cover 102. In someembodiments, the second cover layer 118 includes a mixture ofpolyurethane and coal tar. In some embodiments, the second cover layer118 includes silicone. Also, the second cover layer 118 may also come ina variety of colors. Also, the material forming the second cover layer118 may further include relatively high adhesion to other components.

The cover 102 may further include an attachment feature 114 designed toreceive and secure an electronic device with the accessory device 100.In this regard, the attachment feature 114 may include magnets (notshown) disposed in the attachment feature 114, with each magnet arrangedto magnetically couple with one of several magnets (not shown) disposedin an electronic device. Further, the accessory device 100 may includean electrical contact 116 designed to electrically couple with anelectrical contact (not shown) of an electronic device when theelectronic device is used with the accessory device 100. Accordingly,the electrical contact 116 may be formed from an electrically conductivematerial, such as a metal. Also, in other embodiments, the attachmentfeature 114 includes two or more electrical contacts designed toelectrically couple with a corresponding number of electrical contactsin an electronic device. Also, the attachment feature 114 may be coupledwith the cover 102 by way of the second cover layer 118 that extendsfrom the cover 102 and wraps around the attachment feature 114 to definea top, or upper, surface of the attachment feature 114. This will beshown and described below.

The second cover layer 118 may further include abrasion-resistantproperties. In this regard, the second cover layer 118 may include arelatively high coefficient of friction, which may limit or preventmovement of an electronic device (not shown) should the electronicdevice engage the portion of the second cover layer 118 that covers theattachment feature 114. However, in order to lower the coefficient offriction at the attachment feature 114, the attachment feature 114 mayinclude a first layer 122 and a second layer 124 surrounding theelectrical contact 116 and combining to substantially cover theattachment feature 114 in a location that receives the electronicdevice. The first layer 122 and the second layer 124 may include a lowercoefficient of friction relative to the second cover layer 118, allowingthe electronic device to slide against the first layer 122 and thesecond layer 124 to align and couple with the attachment feature 114.

The keyboard assembly 104 may include keys 126 positioned throughout thekeyboard assembly 104. The keys 126 may include a QWERTY configurationcommonly known in the art for a keyboard. However, in other embodiments,the keys 126 include a different configuration according to a languageor dialect. The keyboard assembly 104 may include a printed circuitboard (not shown) embedded in the keyboard assembly 104 and electricallycoupled with the keys 126. The keyboard assembly 104 may further includea retention feature 128 disposed across, and protruding from, a topsurface 130 of the keyboard assembly 104. The retention feature 128 maybe designed to at least partially receive the attachment feature 114when the cover 102 is in a particular folded configuration. Theretention feature 128 may provide a mechanical stop for the attachmentfeature 114 and an electronic device secured with the attachment feature114. This will be shown below. As shown in FIG. 1, the retention feature128 includes a ring-like configuration protruding from the top surface130. However, in other embodiments, the retention feature 128 includestwo or more discontinuous features that provide the mechanical stopfeature similar to a manner previously described. Although not shown, inother embodiments, a trough or “valley” can be located within theretention feature 128 that positions a portion of the attachment feature114 below the top surface 130. Also, the keyboard assembly 104 mayinclude an array of magnets (not shown) disposed below the retentionfeature 128 that magnetically couple with attachment feature magnets inthe attachment feature. By magnetically coupling with magnets in theattachment feature 114, the array of magnets below the retention feature128 may combine with the retention feature 128 to hold the attachmentfeature 114 as well as an electronic device secured with the attachmentfeature 114. This will be shown below.

FIG. 2 illustrates an exploded view of the attachment feature 114,showing several features that form the attachment feature 114. Forexample, the attachment feature 114 may include first attachment featuremagnets 132 and second attachment feature magnets 134. In someembodiments, the first attachment feature magnets 132 and the secondattachment feature magnets 134 include several magnets aligned togetherprior to assembly. In the embodiment shown in FIG. 2, the firstattachment feature magnets 132 and the second attachment feature magnets134 are formed form a composition of (initially) non-magnetized materialthat is magnetized prior to an assembly of the attachment feature 114.The first attachment feature magnets 132 and the second attachmentfeature magnets 134 may be placed under a camera/sensor assembly (notshown) and aligned with a magnetizer (not shown) according to a desiredalignment between the electrical contact 116 and an electronic device(not shown). This allows for a customized magnetization, or customizedexternal magnetic field, that improves a magnetic alignment between theaccessory device 100 (shown in FIG. 1) and an electronic device, therebyimproving a magnetic coupling between the accessory device 100 and theelectronic device.

FIG. 2 further shows the first attachment feature magnets 132 and thesecond attachment feature magnets 134 having several magnetized regions.As shown, the magnetized regions may include regions of different sizes.This may promote the customized external magnetic field previouslydescribed. Also, as known by one of ordinary skill in the art, a magnetgenerally includes a magnetic polarity having a “North” facing polarity,or North Pole, and a “South” facing polarity, or South Pole, withmagnetic field lines pointing in a direction from the North Pole to theSouth Pole. Also, it is also understood by one of ordinary skill in theart that a North Pole of a magnet may be magnetically attracted to aSouth Pole of a magnet, and that two North poles, or two South poles,may magnetically repel one another. In this regard, adjacent magneticregions of the first attachment feature magnets 132 and the secondattachment feature magnets 134 may include magnet polarities designed toproduce external magnetic fields pointing in opposite directions.

For example, as shown in the enlarged view, the first attachment featuremagnets 132 may include a first magnetic region 136 and a secondmagnetic region 138 adjacent to the first magnetic region 136. The firstmagnetic region 136 may include an external magnetic field (shown asdotted lines) in accordance with a first magnetic polarity, indicativeof a top surface having a North pole and a bottom surface (not shown)opposite the top surface having a South pole. Conversely, the secondmagnetic region 138 may include an external magnetic field (shown asdotted lines) in accordance with a second magnetic polarity that isopposite the first magnetic polarity, indicative of a top surface havinga South pole and a bottom surface (not shown) opposite the top surfacehaving a North pole. This pattern of adjacent magnetic regions havingopposing magnetic polarities may be representative of magnetic regionsof the first attachment feature magnets 132 and the second attachmentfeature magnets 134. While a particular magnetic polarity is shown, thearrangement may be reversed for the first magnetic region 136 and thesecond magnetic region 138, as well as remaining magnetic regions. Also,as previously stated, the magnetic regions may differ in size. Forexample, as shown, the first magnetic region 136 is smaller than that ofthe second magnetic region 138. Other size differences are possible.

Also, as shown in FIG. 2, the electrical contact 116 may be disposed on,and in electrical communication with, a flexible circuit assembly 135.Also, the attachment feature 114 may include a magnetic shunt 137 formedfrom a metal, including soft steel, such that the magnetic shunt 137 ismagnetically attracted to the first attachment feature magnets 132 andthe second attachment feature magnets 134. Also, the magnetic shunt 137may contain the external magnetic field of the first attachment featuremagnets 132 and the second attachment feature magnets 134 in onelocation, and direct the magnetic fields of the first attachment featuremagnets 132 and the second attachment feature magnets 134 in a directiontowards magnets in an electronic device (not shown). The attachmentfeature 114 may further include a protective component 140 that includesa metal layer (not shown) such as stainless steel. The protectivecomponent 140 may be designed to receive the first attachment featuremagnets 132, the second attachment feature magnets 134, the flexiblecircuit assembly 135, and the magnetic shunt 137. Also, the protectivecomponent 140 may include a coating 142 covering the protectivecomponent 140 and providing an aesthetic finish for the protectivecomponent 140. In some embodiments, the coating 142 includes aphotothermolplastic (“PTP”) material that includes polyurethane plus athermoplastic.

The attachment feature 114 may further include several additionalfeatures. For example, the attachment feature 114 may include a portionof an electrically conductive fabric 144 designed to provide electricalcommunication path between an electronic device and the keyboardassembly 104 (shown in FIG. 1). The electrically conductive fabric 144may wrap around the protective component 140 and electrically couplewith the flexible circuit assembly 135, and continue to extend to thekeyboard assembly 104. Accordingly, the electrically conductive fabric144 may electrically couple with the electrical contact 116. In someembodiments, the electrically conductive fabric 144 includes a body thatis electrically conductive throughout its entirety. In the embodimentshown in FIG. 2, the electrically conductive fabric 144 includes anelectrically conductive portion 146 designed to provide the electricalcommunication path between the aforementioned components. Also, thesecond cover layer 118 may also wrap around the attachment feature 114and the electrically conductive fabric 144 to combine with the firstlayer 122 and the second layer 124 and define a top surface of theattachment feature 114. As shown, the second cover layer 118 may includean opening 148 that allow the electrical contact 116 to couple with anelectrical contact of an electronic device.

FIG. 3 illustrates a cross sectional view of the attachment feature 114,showing the various components of the attachment feature 114 assembledtogether. As shown, the coating 142 surrounds the protective component140. The protective component 140 is generally U-shaped, but may varyaccording to a desired shape of the attachment feature 114. Also, theprotective component 140 may receive a magnet 154, which may be one ofthe magnets of the first attachment feature magnets 132 or the secondattachment feature magnets 134 (shown in FIG. 2), as well as themagnetic shunt 137. Also, the second cover layer 118 and theelectrically conductive fabric 144 may wrap around the coating 142.Also, the second cover layer 118 may extend over an uppermost surface ofthe magnet 154. The attachment feature 114 may further include an innerlayer 156 designed to provide cover one or more layers, and provide anaesthetic appearance to the accessory device. The inner layer 156 mayinclude PTP. Further, as shown, the second cover layer 118 may combinewith the inner layer 156 to cover the electrically conductive fabric144.

The inner layer 156 may be adhesively secured with an upper portion ofthe attachment feature 114, with the upper portion associated with anuppermost surface of the attachment feature 114 as shown in FIG. 3. Forexample, an adhesive layer 158 between the inner layer 156 and thecoating 142 may partially extend only along of the coating 142. Thisallows for better ease of movement of the attachment feature 114 torotate a clockwise (in a direction denoted by an arrow 160) and/orcounterclockwise manner (in a direction denoted by an arrow 162) aboutthe adhesive layer 158. Accordingly, the second cover layer 118 mayfurther cover the attachment feature 114 when the attachment feature 114is rotated clockwise, and also uncover the attachment feature 114 whenthe attachment feature 114 is rotated counterclockwise. Also, althoughnot specifically shown, other features shown and described in FIG. 3 maybe adhesively secured together.

FIG. 4 illustrates a plan view showing the cover 102, showing the secondcover layer 118 extending to wrap around and overlay the attachmentfeature 114 (as shown in FIG. 3). In this manner, the second cover layer118 may provide the cover 102 with an exterior surface having aconsistent finish in terms of appearance (including color) and feel(including texture and roughness), as the second cover layer 118provides a consistent finish from the attachment feature 114 to an endof the cover 102 opposite the attachment feature 114. While the secondcover layer 118 is described as including a polymer-based material, inother embodiments, the second cover layer 118 includes leather.Generally, the second cover layer 118 may include any material capableof bending while also adhering to features of the cover 102.

FIG. 5 illustrates a plan view of the accessory device 100, showingseveral magnets and detection mechanisms positioned throughout theaccessory device 100. The magnets shown and described in FIG. 5 mayinclude dotted lines to denote the magnets are positioned between two ormore layers of material. As shown, the first segment 106 and the thirdsegment 110 (of the cover 102) may include first cover magnets 202 andsecond cover magnets 204, respectively, with each aforementioned covermagnets including several magnetic elements. In certain foldingconfigurations (shown and described below), the second cover magnets 204may magnetically couple with the first cover magnets 202 such that thefirst segment 106 remains engaged with the third segment 110 by way ofseveral magnetic circuits formed between the first cover magnets 202 andthe second cover magnets 204. For example, the first cover magnets 202include a magnetic element 212 and the second cover magnets 204 includea magnetic element 222 designed to magnetically couple with the magneticelement 212 in the first segment 106. Also, the first cover magnets 202and the second cover magnets 204 may include adjacent magnets havingmagnetic polarities designed to form an external magnetic field inopposite directions, similar to a magnetic arrangement of the firstattachment feature magnets 132 (shown in FIG. 2). Accordingly, themagnets of the first cover magnets 202 and the second cover magnets 204may define alternating magnetic polarities (with respect to adjacentmagnets). The remaining magnets in the first cover magnets 202 and thesecond cover magnets 204 may include similar relationships as thosedescribed. Also, the first cover magnets 202 may include an equal as thenumber of magnetic elements as that of the second cover magnets 204.

Also, in some folded configurations, the keyboard assembly 104 maymagnetically couple with the cover 102 to retain the keyboard assembly104 with the cover 102. For example, the second segment 108 of the cover102 may include third cover magnets 206 designed to magnetically couplewith first keyboard magnets 208 (disposed in the keyboard assembly 104)when the keyboard assembly 104 is folded over and onto, or nearly onto,the cover 102, and in particular, over and onto the first segment 106and the second segment 108. This will be shown below. Also, it will beappreciated that magnets in the third cover magnets 206 and the firstkeyboard magnets 208 may include similar relationships, such as adjacentmagnetic elements having alternative magnetic polarities in a mannerpreviously described. Further, the magnetic polarities of the magnets inthe third cover magnets 206 may be opposite of corresponding magnets(forming a North-South polarity alignment between the magnetic elements)in the first keyboard magnets 208 such that several magnetic circuitsare formed between magnetic elements of the third cover magnets 206 andmagnets of the first keyboard magnets 208 when the keyboard assembly 104is folded over and onto, or nearly onto, the cover 102. This alsoimplies that the third cover magnets 206 may include an equal as thenumber of magnetic elements as that of the first keyboard magnets 208.

The magnetic polarities of the magnetic elements in the first attachmentfeature magnets 132 and the second attachment feature magnets 134 (bothin the attachment feature 114) were previously described as having amagnetic polarity such that the first attachment feature magnets 132 andthe second attachment feature magnets 134 may magnetically couple withmagnets in an electronic device (not shown). However, the magnets in thefirst attachment feature magnets 132 and the second attachment featuremagnets 134 may also magnetically couple with second cover magnets 210disposed below the retention feature 128 of the keyboard assembly 104when the attachment feature 114 is positioned, or nearly positioned, inthe retention feature 128. In this regard, each magnet in the firstattachment feature magnets 132 and the second attachment feature magnets134 may include a magnetic polarity to magnetically couple with a magnetin the second cover magnets 210 of magnets in the retention feature 128.This may allow the retention feature 128 further secure the attachmentfeature 114 and an electronic device (not shown) coupled with theattachment feature 114. This also implies that the combined number ofmagnets in the first attachment feature magnets 132 and the secondattachment feature magnets 134 may equal the number of magnets in thesecond cover magnets 210.

The accessory device 100 may include additional magnets and otherassociated features. For example, the accessory device 100 may include afirst detection mechanism 230 in the keyboard assembly 104. In someembodiments, the first detection mechanism 230 is a Hall Effect sensordesigned to detect an external magnetic field and generate an electricalsignal, in response to detecting the external magnetic field, toindicate the presence of the external magnetic field. This may indicatea structural feature that carries a magnetic that generates the externalmagnetic field is present. Alternatively, the first detection mechanism230 can be designed to generate an electrical signal, in response to nolonger detecting the external magnetic field, to indicate the externalmagnetic field is no longer present, and may indicate a structuralfeature that carries a magnetic that generates the external magneticfield is no longer present. In other embodiments, the first detectionmechanism 230 is a mechanical switch that closes a circuit in responseto detecting an external magnetic field.

As shown, the cover 102 includes a magnet 232 (disposed in the firstsegment 106) that generates an external magnetic field (not shown) thatmay be detected by the first detection mechanism 230. For example, thefirst detection mechanism 230 may detect the magnet 232 (that is, theexternal magnetic field) when the keyboard assembly 104 is folded overand onto, or nearly onto, the cover 102. Then, the first detectionmechanism 230 may generate an electrical signal to a processor circuit(not shown) in the accessory device 100, or an electronic deviceelectrically coupled with the accessory device 100, causing the keyboardassembly 104 to power down as the keyboard assembly 104 is inaccessibleto as user. Conversely, when the first detection mechanism 230 no longerdetects the magnet 232, the keyboard assembly 104 may be folded awayfrom the cover 102, causing the first detection mechanism 230 tocommunicate with the aforementioned processor circuit in the accessorydevice 100 or in the electronic device, and generate an electricalsignal resulting in the keyboard assembly 104 receiving electricalcurrent to power on. However, it should be noted that the keyboardassembly 104 may require some electrical current to function and mayreceive the electrical current from the electronic device coupled withthe attachment feature 114.

The accessory device 100 may further include a second detectionmechanism 234 in the keyboard assembly 104. The second detectionmechanism 234 may include any type of detection mechanism previouslydescribed for a detection mechanism. The second detection mechanism 234may be used to detect an external magnetic field from a magnet (notshown) in an electronic device. For example, when the attachment feature114 is disposed in the retention feature 128, the second detectionmechanism 234 may detect an external magnetic field emanating from theelectronic device to indicate the electronic device is positionedupright with respect to the keyboard assembly 104, and provide anelectrical signal to turn the keyboard assembly 104 on. However, whenthe second detection mechanism 234 no longer detects the externalmagnetic field, the second detection mechanism 234 may provide anindication in accordance with the lack of detected external magneticfield to the aforementioned processor circuit, which may cause thekeyboard assembly 104 to power down. The accessory device 100 mayfurther include a third detection mechanism 236 in the keyboard assembly104 designed to provide a secondary, or redundant, indication of anevent or current status of the accessory device 100 in relation to anelectronic device. For example, the third detection mechanism 236 maydetect whether an electronic device is present and whether the keyboardassembly 104 is engaged, or nearly, engaged with the electronic device.For example, when the keyboard assembly 104 is folded onto the firstsegment 106 and the second segment 108, the cover 102 may be folded ontothe electronic device in a manner such that the third detectionmechanism 236 detects an external magnetic field (not shown) in theelectronic device. This folded configuration will be shown below. Thethird detection mechanism 236 may include any type of detectionmechanism previously described for a detection mechanism.

Also, the cover 102 may include first compass magnets 242 and a secondcompass magnets 244, both of which may be used to create a neutral, oroffsetting, external magnetic field with respect to a magnet or magnetsin an electronic device. This may be useful for an electronic devicethat includes a compass or magnetometer that relies upon an externalmagnetic field in the atmosphere to determine a direction or orientationof the electronic device. For example, the first compass magnets 242 mayprovide an external magnetic field that counters, or neutralizes, anexternal magnetic field generated by one or more magnets in the firstcover magnets 202 in the first segment 106 such that the compass ormagnetometer in the electronic device does not falsely determine adirection or orientation based on a magnetic field generated by one ormore magnets in the first cover magnets 202. The second compass magnets244 may work in a similar manner to offset magnetic in the second covermagnets 204. Also, although the various magnets and detection mechanismsshown and described in FIG. 5 are located in discrete locations, some ofthe magnets may be arranged in other locations, as differentarrangements may be suitable, so long as the same or substantiallysimilar magnetic relationships are maintained.

FIG. 6 illustrates an isometric view of an embodiment of an electronicdevice 300 suitable for use with the accessory device 100 (shown in FIG.1). In some embodiments, the electronic device 300 is a mobilecommunications device, such as a smartphone. In the embodiment shown inFIG. 1, the electronic device 300 is a tablet computer device. Theelectronic device 300 may vary in shape and size. Also, the electronicdevice 300 may include an enclosure 302 designed to enclose and protectseveral internal components (not shown). In some embodiments, theenclosure 302 is formed from a metal, such as aluminum. Also, theelectronic device 300 may include a display assembly 304 designed topresent visual information to a user. In some embodiments, the displayassembly 304 includes a touch sensitive layer designed to receive atouch input and generate a command, in accordance with the touch input,to a processor circuit (not shown) in the electronic device 300.Further, in some embodiments, the display assembly 304 includes acapacitive touch sensitive layer designed to generate an input basedupon a capacitive coupling with the display assembly 304. Further, anouter protective layer 306 made from a transparent material, such asglass, may also overlay the display assembly 304. The cover 102 (shownin FIG. 1) may include a size and a shape to cover the outer protectivelayer 306, and accordingly, the display assembly 304. Also, in someembodiments, the electronic device 300 includes a force detection sensor(not shown) designed to detect an amount of force applied to the displayassembly 304 and/or the outer protective layer 306, and provide acommand based upon the amount of force detected.

The electronic device 300 may include a button 308 designed to receivean input corresponding to a command to the electronic device 300 (forexample, to change the visual information shown on the display assembly304). Also, the electronic device 300 may include a charge port 310designed to receive power from a power source (not shown) in order tosupply power an internal power source that powers internal components ofthe electronic device 300. The charge port 310 may also be used toprovide communicate to and from the electronic device 300.

The electronic device 300 may further include an electrical contact 312designed to electrically couple with an accessory device, and inparticular, an electrical contact of an accessory device, such as theelectrical contact 116 of the accessory device 100 (shown in FIG. 1).This may allow for electrical communication between internal components,such as processor circuits (not shown), of the electronic device 300 andan accessory device. The electronic device 300 may further include firstdevice magnets 314 and second device magnets 316 disposed in theelectronic device 300 along a sidewall of the enclosure 302. The firstdevice magnets 314 may include several magnets having a magneticpolarity to magnetically couple with the first attachment featuremagnets 132 in the attachment feature 114 (shown in FIG. 1). Similarly,the second device magnets 316 may include several magnets having amagnetic polarity to magnetically couple with the second attachmentfeature magnets 134 in the attachment feature 114 (also shown in FIG.1). The magnetic circuits formed by multiple magnetic couplings mayallow the electronic device 300 to magnetically couple with theaccessory device 100 shown in FIG. 1.

Once an accessory device is coupled with an electronic, the accessorydevice may be folded into several different folded configurations. FIGS.7-11 illustrate examples of several folded configurations of theaccessory device 100 which may provide a use or benefit to a user of theelectronic device 300. Some folded configurations may provide varioustypes of support configuration while other folded configurations providea protective configuration.

FIG. 7 illustrates a side view of the accessory device 100 coupled withthe electronic device 300, with the accessory device 100 in a foldedconfiguration to allow use of the keyboard assembly 104 with theelectronic device 300. As shown, the folded configuration may includethe first segment 106, the second segment 108, and the third segment 110folded to form a triangular support for the electronic device 300.Further, the electronic device 300 may abut against the third segment110. In this configuration, the keyboard assembly 104 may be used toprovide an input device in order to generate input or command to theelectronic device 300, and change the visual information (denoted asseveral diagonal lines) of the display assembly 304. This is due in partto the electrically conductive fabric 144 (that includes theelectrically conductive portion 146 in FIG. 2), shown in the enlargedview, folding with the cover 102, and extending through the cover 102.

FIG. 8 illustrates an enlarged view of Section A, shown in FIG. 7,showing the attachment feature 114 positioned in the retention feature128. A partial cross sectional view of the retention feature 128 isshown to illustrate the retention feature 128 used to provide amechanical stop for the attachment feature 114, as the attachmentfeature 114 is partially disposed in the retention feature 128. Also, asshown, the attachment feature 114 may include a magnet 240 that may bepart of the first attachment feature magnets 132 or the secondattachment feature magnets 134 (shown in FIG. 2) magnetically coupledwith a magnet 318 that may be part of the first device magnets 314 orthe second device magnets 316, respectively (shown in FIG. 6). Theexternal magnetic field is shown as dotted lines having arrows. Also,the magnet 240 in the attachment feature 114 may further be magneticallycoupled with a magnet 250 (part of the second cover magnets 210 shown inFIG. 5) in the keyboard assembly 104. This magnetic coupling may, incombination with the retention feature 128, maintain the attachmentfeature 114 and the electronic device 300 in a stationary position.Although not shown, the first attachment feature magnets 132 and thesecond attachment feature magnets 134 may provide a magnetic couplingwith magnets of the first device magnets 314 and second device magnets316, respectively, in a manner similar to that shown in FIG. 8. Also,the first attachment feature magnets 132 and the second attachmentfeature magnets 134 may provide a magnetic coupling with magnets of thesecond cover magnets 210 in a manner similar to that shown in FIG. 8.

FIG. 9 illustrates a side view of the accessory device 100 coupled withthe electronic device 300, with the accessory device 100 in an alternatefolded configuration to further position the electronic device 300 in anupright position. In this configuration, the first segment 106, thesecond segment 108, and the third segment 110 may again combine to forma triangular support structure. However, in this configuration, thekeyboard assembly 104 is disposed behind the electronic device 300 andalso used to further support the electronic device. Also, in thisconfiguration, the keyboard assembly 104 may not be in use and adetection mechanism previously described may be used to generate anelectrical signal to power down the keyboard assembly 104. Theconfiguration shown in FIG. 9 may be useful when, for example, a user iswatching a media file on the display assembly 304, and the keyboardassembly 104 is not needed. Also, the keyboard assembly 104 may bemagnetically coupled with the electronic device 300 by way of magneticcouplings between magnetic elements (not shown) in the electronic device300 and the keyboard assembly 104.

FIG. 10 illustrates a side view of the accessory device 100 coupled withthe electronic device 300, with the accessory device 100 in an alternatefolded configuration to position the keyboard assembly 104 behind theelectronic device 300. In this configuration, the first segment 106, thesecond segment 108, and the third segment 110 may again combine to forma triangular support structure. The keyboard assembly 104 is againdisposed behind the electronic device 300 and also used to furthersupport the electronic device. Also, in this configuration, the keyboardassembly 104 may not be in use and a detection mechanism previouslydescribed may be used to generate an electrical signal to power down thekeyboard assembly 104. Also, the keyboard assembly 104 may bemagnetically coupled with the electronic device 300 by magnets(previously described). The configuration shown in FIG. 10 may be usefulwhen, for example, a user is elevated with respect to the electronicdevice 300 and looking down at display assembly 304, and/or when thekeyboard assembly 104 is not needed

FIG. 11 illustrates a side view of the accessory device 100 coupled withthe electronic device 300, with the accessory device 100 in an alternatefolded configuration behind the electronic device 300 such that theaccessory device 100 supports the electronic device 300 in a horizontalposition. In this configuration, the first segment 106, the secondsegment 108, and the third segment 110 are generally horizontal, witheach segment providing a support for the electronic device 300. Thekeyboard assembly 104 is again disposed behind the electronic device 300and also used to further support the electronic device. Also, in thisconfiguration, the keyboard assembly 104 may not be in use and adetection mechanism previously described may be used to generate anelectrical signal to power down the keyboard assembly 104. Also, thekeyboard assembly 104 may be foldable respect to the cover 102, and inparticular, the first segment 106 and the second segment 108. Further,the third segment 110 may be raised or elevated with respect to thefirst segment 106 and the second segment 108 such that when the keyboardassembly 104 is folded over and onto the first segment 106 and thesecond segment 108, the keyboard assembly 104 is generally co-planar, orflush, with respect to the third segment 110, as shown in FIG. 11. Inthis manner, the keyboard assembly 104 and the third segment 110 maycombine to form a horizontal (or planar) support for the electronicdevice 300, as shown in FIG. 11. The configuration shown in FIG. 11 maybe useful when, for example, when a user places the electronic device300 on a lap of the user and is looking down at display assembly 304(shown in FIG. 6) of the electronic device 300. The configuration shownin FIG. 11 may also be useful when the user has relatively limitedspace, such as when sitting on an airplane or a bus.

FIG. 12 illustrates an isometric view of the accessory device 100 in aclosed configuration, showing the accessory device 100 positioned overthe display assembly (not shown) of the electronic device 300. Theaccessory device 100 may be complementary with other accessory devices.For example, FIG. 12 further shows a second accessory device 350 havinga size and shape to receive the electronic device 300 and provide aprotective cover around the enclosure 302. Also, the second accessorydevice 350 may include an opening 352 in a sidewall of the secondaccessory device 350, with the opening 352 designed to receive theattachment feature 114 and a portion of the second cover layer 118. Thesecond accessory device 350 may include exterior features similar tothose of the accessory device 100, such as a similar appearance (color)or feel (texture or roughness). However, the second accessory device 350may come in various appearances and feels that may differ from those ofthe accessory device 100.

In some embodiments, an accessory device may include a feature orfeatures designed to limit movement of a keyboard assembly with respectto a cover. For example, FIG. 13 illustrates a plan view of theaccessory device 100, showing a support layer 402 extending along thefirst segment 106 and partially onto the keyboard assembly 104. In otherembodiments, the support layer 402 extends across the second segment 108and/or the third segment 110. The support layer 402 may include a liquidcrystal polymer fiber material. Also, the support layer 402 may includea relatively high tensile strength, similar to that of Kevlar.

The support layer 402 may be designed and positioned to allow movementof the keyboard assembly 104 with respect to the cover 102 in somedirections, and also limit or prevent movement of the keyboard assembly104 with respect to the cover 102. FIGS. 14 and 15 describe an exemplaryrotational movement of the keyboard assembly 104 relative to the cover102, based in part on the support layer 402. FIG. 14 illustrates a sideview of the accessory device 100, with the keyboard assembly 104 foldedover and onto the cover 102. As shown, the support layer 402 (denoted asa dotted line) may bend with the hinge 105 to allow movement of thekeyboard assembly 104 with respect to the cover 102.

Conversely, FIG. 15 illustrates a side view of the accessory device 100,with the keyboard assembly 104 folded away from the cover 102. As shown,a portion of the accessory device 100 is located near an edge of asurface 410 (such as a table or desk) in a manner such that when thekeyboard assembly 104 is folded away from the cover 102, as shown inFIG. 15, the keyboard assembly 104, without additional support, wouldfurther fold or rotate away from the cover 102 by gravitational forces.However, the support layer 402 may provide a tension to, and limitmovement of, the keyboard assembly 104 and the hinge 105 to apredetermined maximum angle 420 with respect to the cover 102. Thepredetermined maximum angle may be 180 degrees, or approximately 180degrees. Also, the predetermined maximum angle 420 also represents anangle less than what the keyboard assembly 104 would otherwise rotatewithout a support force (such as the surface 410) below the keyboardassembly 104 that would stop rotation of the keyboard assembly 104. Thismay contribute to an improved user experience of the accessory device100, as the accessory device 100 may be less flimsy by remaining at apredetermined angle when nothing is below the keyboard assembly 104.Also, although not shown, the support layer 402 may be pre-tensioned tochange the predetermined maximum angle 420 to some other angle, forexample, greater than 180 degrees.

FIG. 16 illustrates a cross sectional view of the accessory device 100,showing the support layer 402 combining with other features to limit themovement of the keyboard assembly 104 with respect to the cover 102. Forexample, in addition to the tensional forces provided by the supportlayer 402, the second cover layer 118 may extend from the cover 102 andinto the keyboard assembly 104. Further, as shown in FIG. 16, the secondcover layer 118 may compress in a location between the cover 102 and thekeyboard assembly 104, and a resultant counterforce by the second coverlayer 118, based on the compression, may further maintain the keyboardassembly 104 at a desired predetermined angle with respect to the cover102. Also, FIG. 16 further shows the support layer 402 covered by afirst layer 406 and a second layer 408 disposed on the cover 102 and thekeyboard assembly 104, respectively. The first layer 406 and the secondlayer 408 may be cosmetic layers that enhance an appearance of theaccessory device 100. In this regard, the first layer 406 and the secondlayer 408 may include a material such as microfiber.

FIG. 17 illustrates a cross sectional view of an alternate embodiment ofan accessory device 500, showing a support layer 552 combining with arigid layer 520 to limit the movement of a keyboard assembly 504 withrespect to a cover 502. The accessory device 500 may include any featureor feature previously described for an accessory device. Also, thesupport layer 552 may be substantially similar to that of the supportlayer 402 (shown in FIG. 16). As shown, the rigid layer 520 may includea layer of material that overlays an exterior layer 518 of the cover502. Also, the rigid layer 520 may include a PTP material. When thekeyboard assembly 504 is folded away from the cover 502 in a mannershown in FIG. 17, the rigid layer 520 abuts against the exterior layer518 in a location in which the exterior layer 518 engages the keyboardassembly 504, thereby prevent the keyboard assembly 504 from furthermovement. The rigid layer 520 may be positioned in various manners basedupon a desired angle between the cover 502 and the keyboard assembly504.

The keys of a keyboard assembly may provide a feedback, defined by aresponse of the key to a depression thereof, to a user based in part onthe material or materials used to cover the keys. Generally, thefeedback is the same for all keys. In some cases, however, a keyboardassembly of an accessory device may include a non-porous material thatacts as an air seal to limit or prevent air movement into or out of thekeyboard assembly. As a result, the feedback may differ for providingfor an inconsistent or undesired user experience.

However, accessory devices in accordance with the described embodimentsmay include a keyboard assembly that allows air passage to and from thekeys. For example, FIG. 18 illustrates an interior view of an embodimentof a top portion of a keyboard assembly 604, showing a vent system 610distributed throughout the keyboard assembly 604 that allows passage ofair into and out of the keyboard assembly 604. For purposes ofillustration and simplicity, several features of the keyboard assembly604 are removed. The vent system 610 may include a channel, or series ofchannels, that opens to each of the keys (not shown) of the keyboardassembly 604. The keyboard assembly 604 may further include a firstopening 612 and a second opening 614, both of which allow the ventsystem 610 open to ambient air. In this manner, the vent system 610, byway of the first opening 612 and the second opening 614, may relieve airpressure forming along the keys and allow the keys to remain at or nearatmospheric pressure. This may include instances when the keyboardassembly 604 becomes heated (causing air expansion) or cooled (causingair contraction).

FIG. 19 illustrates a partial exterior view of the top portion of thekeyboard assembly 604 shown in FIG. 18, further showing the firstopening 612. While the first opening 612 may include an opening free ofobstruction (as shown in FIG. 19) in other embodiments, the firstopening 612 is covered with a layer of material also used to cover thekeyboard assembly 604. In this regard, the layer of material may includepolyester. In other embodiments, a mesh feature covers the first opening612. Generally, any material having some porosity that allows airpassage may cover the first opening 612. Further, in other embodiments,the keyboard assembly 604 is laser etched to includes several lozenge,or diamond-shaped, features, in order to reduce an overall appearance ofthe opening as compared to the first opening 612. The features describedfor the keyboard assembly 604 shown in FIGS. 18 and 19 may be used inthe keyboard assembly 104, shown in FIG. 1.

FIG. 20 illustrates a partial plan view of an alternative embodiment ofan accessory device 700 having a display assembly 704 in place of akeyboard assembly. The accessory device 700 may include any feature orfeature previously described for an accessory device, with the exceptionof a keyboard assembly. The display assembly 704 may include similarfeatures described for a display assembly 304 of an electronic device300, shown in FIG. 6, such as visual content display and touch screencapabilities. Also, a detection mechanism (not shown) may be used topower down the display assembly 704 in a manner previously described forpowering down a keyboard assembly. The display assembly 704 may providefor a system, that is, the accessory device 700 plus an electronicdevice (not shown), that includes dual display capabilities. Further,the display assembly 704 can change its visual appearance to present akeyboard assembly used as an input feature by touching the displayassembly 704.

The various aspects, embodiments, implementations or features of thedescribed embodiments can be used separately or in any combination.Various aspects of the described embodiments can be implemented bysoftware, hardware or a combination of hardware and software. Thedescribed embodiments can also be embodied as computer readable code ona computer readable medium for controlling manufacturing operations oras computer readable code on a computer readable medium for controllinga manufacturing line. The computer readable medium is any data storagedevice that can store data which can thereafter be read by a computersystem. Examples of the computer readable medium include read-onlymemory, random-access memory, CD-ROMs, HDDs, DVDs, magnetic tape, andoptical data storage devices. The computer readable medium can also bedistributed over network-coupled computer systems so that the computerreadable code is stored and executed in a distributed fashion.

The foregoing description, for purposes of explanation, used specificnomenclature to provide a thorough understanding of the describedembodiments. However, it will be apparent to one skilled in the art thatthe specific details are not required in order to practice the describedembodiments. Thus, the foregoing descriptions of the specificembodiments described herein are presented for purposes of illustrationand description. They are not targeted to be exhaustive or to limit theembodiments to the precise forms disclosed. It will be apparent to oneof ordinary skill in the art that many modifications and variations arepossible in view of the above teachings.

What is claimed is:
 1. An accessory for an electronic device, theaccessory comprising: a cover having a size and shape to cover a devicedisplay of the electronic device, the cover having a first end and asecond end opposite the first end; a body connected to the cover at thefirst end, the body rotatably coupled to the cover at the first end, thebody comprising a display assembly; an attachment feature that iscapable of releasably coupling with the electronic device, theattachment feature connected to the cover at the second end, wherein thedisplay assembly is in communication with the electronic device when theattachment feature is coupled with the electronic device; and aretention feature that is integrated with the body and supports theattachment feature when the attachment feature is at least partiallyengaged with the retention feature.
 2. The accessory of claim 1, whereinthe display assembly comprises a touch input mechanism.
 3. The accessoryof claim 2, wherein the display assembly is capable of presenting akeyboard that uses the touch input mechanism.
 4. The accessory of claim1, further comprising an electrical contact capable of electricallycoupling with the electronic device.
 5. The accessory of claim 4,further comprising: a first magnetic element carried by the attachmentfeature; a second magnetic element carried by the attachment feature,wherein the electrical contact is positioned between the first magneticelement and the second magnetic element; and a third magnetic elementembedded in the body at a location corresponding to the retentionfeature, wherein the first magnetic element and the second magneticelement magnetically interact with i) device magnets of the electronicdevice to align and secure a device contact of the electronic devicewith the electrical contact, and ii) the third magnetic element tosecure the attachment feature with the retention feature.
 6. Theaccessory of claim 1, further comprising a cover layer that at leastpartially covers the cover and the body, the cover layer securing theattachment feature with the cover.
 7. The accessory of claim 1, whereinthe retention feature defines a ring that protrudes from the body.
 8. Anaccessory for an electronic device that includes a device display, theaccessory comprising: a body that carries a display assembly that iscapable of presenting visual information; a first magnet embedded in thebody; a foldable cover coupled with the body, the foldable cover capableof covering the device display; an attachment feature coupled with thefoldable cover; and a second magnet carried by the attachment featureand capable of magnetically coupling with the electronic device, whereinthe foldable cover is capable of folding with respect to the body suchthat the second magnet magnetically couples with the first magnet andcombines with the body to retain and support the electronic device. 9.The accessory of claim 8, further comprising a retention feature thatprotrudes from the body, wherein the first magnet is embedded in thebody in a location corresponding to the retention feature.
 10. Theaccessory of claim 9, wherein the retention feature defines a ring onthe body.
 11. The accessory of claim 10, wherein when the second magnetmagnetically couples with the first magnet, the attachment feature is atleast partially positioned in the ring.
 12. The accessory of claim 8,wherein the foldable cover comprises: a first segment coupled with thebody; and a second segment coupled with the attachment feature.
 13. Theaccessory of claim 8, wherein the visual information includes akeyboard, and wherein the display assembly comprises a touch inputdisplay that is used by the keyboard.
 14. The accessory of claim 8,wherein the device display defines a first display of a dual displaysystem, and wherein the display assembly defines a second display of thedual display system.
 15. An accessory for use with an electronic device,the accessory comprising: an attachment feature that includes a firstmagnet capable of magnetically coupling with the electronic device; acover having a first end and a second end opposite the first end, thecover secured with the attachment feature at the first end, the coverincluding: a first segment, a second segment separated from the firstsegment by a first foldable region, and a third segment separated fromthe second segment by a second foldable region; and a body secured withthe cover at the second end, the body including a second magnet, whereinwhen the cover folds at the first foldable region and the secondfoldable region to define a support structure, the first magnet ispositioned on the body such that the first magnet magnetically coupleswith the second magnet and the support structure supports the electronicdevice.
 16. The accessory of claim 15, wherein the body comprises adisplay assembly.
 17. The accessory of claim 16, wherein the displayassembly comprises a touch input display.
 18. The accessory of claim 16,wherein the display assembly presents a keyboard.
 19. The accessory ofclaim 16, wherein the display assembly presents multiple applications.20. The accessory of claim 15, wherein the cover includes a size andshape capable of covering a display of the electronic device.